Take your chess training anywhere with the Lightnote Solar-Powered Chess Puzzle Device, a compact and easy-to-use tool designed to sharpen your skills. With 25,000+ checkmate puzzles, this device helps you recognize patterns, improve tactics, and strengthen your overall strategy. Unlike chess apps or books, its distraction-free e-ink display provides a clear, glare-free chessboard, making it comfortable to use for long periods without straining your eyes. Designed for convenience, this battery-free chess trainer runs on solar power and also supports USB-C charging for quick power-ups. A 2-minute charge gives you a full day of use or up to 100 screen refreshes, so you can focus on solving puzzles without interruptions. Its lightweight and pocket-sized design makes it easy to carry wherever you go, whether you're at home, commuting, or traveling. Using the device is simple—just press the button to see a new puzzle or double-press to go back to a previous one. No complicated menus or settings—just an easy way to train your mind and improve your game. Whether you're a beginner learning the fundamentals, a casual player looking for daily practice, or a seasoned competitor preparing for tournaments, this chess puzzle trainer is an effortless way to build your skills anytime, anywhere.